Electron crash repro: SIGSEGV on right-click in -webkit-app-region: drag on macOS 26

gistfile0.txt

// main.js — Minimal reproduction for right-click crash on macOS 26
// Run: npx electron .
// Then right-click the gray drag bar → SIGSEGV crash
//
// Tested: crashes on Electron 42.0.1 and 43.0.0-alpha.1
// Works fine on Electron 41.3.0
// macOS Tahoe 26.2 (25C56), Apple Silicon

const { app, BrowserWindow } = require('electron');

app.whenReady().then(() => {
  const win = new BrowserWindow({
    width: 800,
    height: 600,
    titleBarStyle: 'hidden',
    webPreferences: {
      nodeIntegration: false,
      contextIsolation: true,
    },
  });

  win.loadURL(`data:text/html,
    <div style="-webkit-app-region: drag; height: 40px; background: %23333;
                color: white; display: flex; align-items: center; padding: 0 80px;
                user-select: none;">
      RIGHT CLICK HERE TO CRASH
    </div>
    <div style="padding: 20px;">
      Content area — right-click here is fine
    </div>
  `);
});